Cannot find reference

[spalisetty06]

Hello,
I have imported the module named 'module' and I am trying to use the members in another file, I have installed packages as well, why do I still get 'Cannot find reference'? I will get correct output though.

from module import add as a, name as name, death as death, product as p
print(name)
print(death)
a(10, 20)
print("the product of num is",p(10, 20))

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When googled, it says, it is a bug in Pycharm. Thank you.